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@@ -1,3 +1,181 @@ +Changes in version 0.3.2.2-alpha - 2017-09-29 + Tor-0.3.2.2-alpha is the second release in the 0.3.2 series. This + release fixes several minor bugs in the new scheduler and next- + generation onion services; both features were newly added in the 0.3.2 + series. Other fixes in this alpha include several fixes for non-fatal + tracebacks which would appear in logs. + + With the aim to stabilise the 0.3.2 series by 15 December 2017, this + alpha does not contain any substantial new features. Minor features + include better testing and logging. + + The following comprises the complete list of changes included + in tor-0.3.2.2-alpha: + + o Major bugfixes (relay, crash, assertion failure): + - Fix a timing-based assertion failure that could occur when the + circuit out-of-memory handler freed a connection's output buffer. + Fixes bug 23690; bugfix on 0.2.6.1-alpha. + + o Major bugfixes (scheduler): + - If a channel is put into the scheduler's pending list, then it + starts closing, and then if the scheduler runs before it finishes + closing, the scheduler will get stuck trying to flush its cells + while the lower layers refuse to cooperate. Fix that race + condition by given the scheduler an escape method. Fixes bug + 23676; bugfix on 0.3.2.1-alpha + + o Minor features (build, compilation): + - The "check-changes" feature is now part of the "make check" tests; + we'll use it to try to prevent misformed changes files from + accumulating. Closes ticket 23564. + - Tor builds should now fail if there are any mismatches between the + C type representing a configuration variable and the C type the + data-driven parser uses to store a value there. Previously, we + needed to check these by hand, which sometimes led to mistakes. + Closes ticket 23643. + + o Minor features (directory authorities): + - Remove longclaw's IPv6 address, as it will soon change. Authority + IPv6 addresses were originally added in 0.2.8.1-alpha. This leaves + 3/8 directory authorities with IPv6 addresses, but there are also + 52 fallback directory mirrors with IPv6 addresses. Resolves 19760. + + o Minor features (hidden service, circuit, logging): + - Improve logging of many callsite in the circuit subsystem to print + the circuit identifier(s). + - Log when we cleanup an intro point from a service so we know when + and for what reason it happened. Closes ticket 23604. + + o Minor features (logging): + - Log more circuit information whenever we are about to try to + package a relay cell on a circuit with a nonexistent n_chan. + Attempt to diagnose ticket 8185. + - Improve info-level log identification of particular circuits, to + help with debugging. Closes ticket 23645. + + o Minor features (relay): + - When choosing which circuits can be expired as unused, consider + circuits from clients even if those clients used regular CREATE + cells to make them; and do not consider circuits from relays even + if they were made with CREATE_FAST. Part of ticket 22805. + + o Minor features (robustness): + - Change several fatal assertions when flushing buffers into non- + fatal assertions, to prevent any recurrence of 23690. + + o Minor features (spec conformance, bridge, diagnostic): + - When handling the USERADDR command on an ExtOrPort, warn when the + transports provides a USERADDR with no port. In a future version, + USERADDR commands of this format may be rejected. Detects problems + related to ticket 23080. + + o Minor features (testing): + - Add a unit test to make sure that our own generated platform + string will be accepted by directory authorities. Closes + ticket 22109. + + o Minor bugfixes (bootstrapping): + - When warning about state file clock skew, report the correct + direction for the detected skew. Fixes bug 23606; bugfix + on 0.2.8.1-alpha. + - Avoid an assertion failure when logging a state file clock skew + very early in bootstrapping. Fixes bug 23607; bugfix + on 0.3.2.1-alpha. + + o Minor bugfixes (build, compilation): + - Fix a compilation warning when building with zstd support on + 32-bit platforms. Fixes bug 23568; bugfix on 0.3.1.1-alpha. Found + and fixed by Andreas Stieger. + - When searching for OpenSSL, don't accept any OpenSSL library that + lacks TLSv1_1_method(): Tor doesn't build with those versions. + Additionally, look in /usr/local/opt/openssl, if it's present. + These changes together repair the default build on OSX systems + with Homebrew installed. Fixes bug 23602; bugfix on 0.2.7.2-alpha. + + o Minor bugfixes (compression): + - Handle a pathological case when decompressing Zstandard data when + the output buffer size is zero. Fixes bug 23551; bugfix + on 0.3.1.1-alpha. + + o Minor bugfixes (documentation): + - Fix manpage to not refer to the obsolete (and misspelled) + UseEntryGuardsAsDirectoryGuards parameter in the description of + NumDirectoryGuards. Fixes bug 23611; bugfix on 0.2.4.8-alpha. + + o Minor bugfixes (hidden service v3): + - Don't log an assertion failure when we can't find the right + information to extend to an introduction point. In rare cases, + this could happen, causing a warning, even though tor would + recover gracefully. Fixes bug 23159; bugfix on 0.3.2.1-alpha. + - Pad RENDEZVOUS cell up to the size of the legacy cell which is + much bigger so the rendezvous point can't distinguish which hidden + service protocol is being used. Fixes bug 23420; bugfix + on 0.3.2.1-alpha. + + o Minor bugfixes (hidden service, relay): + - Avoid a possible double close of a circuit by the intro point on + error of sending the INTRO_ESTABLISHED cell. Fixes bug 23610; + bugfix on 0.3.0.1-alpha. + + o Minor bugfixes (logging, relay shutdown, annoyance): + - When a circuit is marked for close, do not attempt to package any + cells for channels on that circuit. Previously, we would detect + this condition lower in the call stack, when we noticed that the + circuit had no attached channel, and log an annoying message. + Fixes bug 8185; bugfix on 0.2.5.4-alpha. + + o Minor bugfixes (scheduler): + - When switching schedulers due to a consensus change, we didn't + give the new scheduler a chance to react to the consensus. Fix + that. Fixes bug 23537; bugfix on 0.3.2.1-alpha + - Make the KISTSchedRunInterval option a non negative value. With + this, the way to disable KIST through the consensus is to set it + to 0. Fixes bug 23539; bugfix on 0.3.2.1-alpha. + - Only notice log the selected scheduler when we switch scheduler + types. Fixes bug 23552; bugfix on 0.3.2.1-alpha. + - Avoid a compilation warning on macOS in scheduler_ev_add() caused + by a different tv_usec data type. Fixes bug 23575; bugfix + on 0.3.2.1-alpha. + - Make a hard exit if tor is unable to pick a scheduler which can + happen if the user specifies a scheduler type that is not + supported and not other types in Schedulers. Fixes bug 23581; + bugfix on 0.3.2.1-alpha. + - Properly initialize the scheduler last run time counter so it is + not 0 at the first tick. Fixes bug 23696; bugfix on 0.3.2.1-alpha. + + o Minor bugfixes (testing): + - Capture and detect several "Result does not fit" warnings in unit + tests on platforms with 32-bit time_t. Fixes bug 21800; bugfix + on 0.2.9.3-alpha. + - Fix additional channelpadding unit test failures by using mocked + time instead of actual time for all tests. Fixes bug 23608; bugfix + on 0.3.1.1-alpha. + - The removal of some old scheduler options caused some tests to + fail on BSD systems. Assume current behavior is correct and make + the tests pass again. Fixes bug 23566; bugfix on 0.3.2.1-alpha. + + o Code simplification and refactoring: + - Remove various ways of testing circuits and connections for + "clientness"; instead, favor channel_is_client(). Part of + ticket 22805. + + o Deprecated features: + - The ReachableDirAddresses and ClientPreferIPv6DirPort options are + now deprecated; they do not apply to relays, and they have had no + effect on clients since 0.2.8.x. Closes ticket 19704. + + o Documentation: + - HiddenServiceVersion man page entry wasn't mentioning the now + supported version 3. Fixes ticket 23580; bugfix on 0.3.2.1-alpha. + - Clarify that the Address option is entirely about setting an + advertised IPv4 address. Closes ticket 18891. + - Clarify the manpage's use of the term "address" to clarify what + kind of address is intended. Closes ticket 21405. + - Document that onion service subdomains are allowed, and ignored. + Closes ticket 18736. + + Changes in version 0.3.2.1-alpha - 2017-09-18 Tor 0.3.2.1-alpha is the first release in the 0.3.2.x series. It includes support for our next-generation ("v3") onion service |